Why Ambassador is an odd name for a capital ship

What is the worst-named class of ships in science fiction?

Star Trek's Ambassador class, because its heavy cruisers are capital assets while an ambassador more naturally evokes a status or presence role.

Applied to naval force structure, the fictional Ambassador class has an awkward name. Its heavy cruisers function as capital assets, while routine diplomacy is associated with status assets and forward visibility with presence assets. An ambassador is a status representative rather than a planetary leader. The objection is that the ship's name and its place in the fleet describe different levels of authority. Ambassadors appear to hold greater status in the Federation, which helps explain the choice without removing that mismatch.